biconvex
/baɪˈkɑnvɛks/
adjective
- Curved outward on both sides, like a typical magnifying lens.
- A biconvex lens is used in a magnifying glass to make objects look larger.
- The eyeglasses had biconvex lenses to help the patient see things up close.
- In the lab, we used a biconvex lens to focus sunlight onto a piece of paper.